4l70E to NP208 or NP241 swap into k10

[Keckdl]

Does anyone know what adapter I would need to mate a new 4L70 to a passenger drop NP208 or NP241? This is going into a 1983 Chevy K10, and the transfer case/s originally mated to a TH700/4L60.
Thanks
Dan

 

[bucket]

Well if it's like anything else these days, it (well, the adapter) has the standard 6-bolt round mounting pattern for a t-case, like the 208 and 241. The output shaft is likely a 27 or 32 spline like every other GM trans, which those were available on both the 208 and 241. The 4L70 is the newer variant of the 60 and 65 isn't it? Should be a 27 spline output if that's the case.